lpfc: add Emulex FC driver version 8.0.28

From: 	James.Smart@Emulex.Com

Modified for kernel import and
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 216 insertions, 0 deletions

diff --git a/drivers/scsi/lpfc/lpfc_sli.h b/drivers/scsi/lpfc/lpfc_sli.h
new file mode 100644
index 000000000000..abd9a8c84e9e
--- /dev/null
+++ b/drivers/scsi/lpfc/lpfc_sli.h
@@ -0,0 +1,216 @@
+/*******************************************************************
+ * This file is part of the Emulex Linux Device Driver for         *
+ * Enterprise Fibre Channel Host Bus Adapters.                     *
+ * Refer to the README file included with this package for         *
+ * driver version and adapter support.                             *
+ * Copyright (C) 2004 Emulex Corporation.                          *
+ * www.emulex.com                                                  *
+ *                                                                 *
+ * This program is free software; you can redistribute it and/or   *
+ * modify it under the terms of the GNU General Public License     *
+ * as published by the Free Software Foundation; either version 2  *
+ * of the License, or (at your option) any later version.          *
+ *                                                                 *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of  *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   *
+ * GNU General Public License for more details, a copy of which    *
+ * can be found in the file COPYING included with this package.    *
+ *******************************************************************/
+
+/*
+ * $Id: lpfc_sli.h 1.42 2005/03/21 02:01:28EST sf_support Exp  $
+ */
+
+/* forward declaration for LPFC_IOCB_t's use */
+struct lpfc_hba;
+
+/* Define the context types that SLI handles for abort and sums. */
+typedef enum _lpfc_ctx_cmd {
+        LPFC_CTX_LUN,
+        LPFC_CTX_TGT,
+        LPFC_CTX_CTX,
+        LPFC_CTX_HOST
+} lpfc_ctx_cmd;
+
+/* This structure is used to handle IOCB requests / responses */
+struct lpfc_iocbq {
+        /* lpfc_iocbqs are used in double linked lists */
+        struct list_head list;
+        IOCB_t iocb;            /* IOCB cmd */
+        uint8_t retry;          /* retry counter for IOCB cmd - if needed */
+        uint8_t iocb_flag;
+#define LPFC_IO_POLL    1       /* Polling mode iocb */
+#define LPFC_IO_LIBDFC  2       /* libdfc iocb */
+#define LPFC_IO_WAIT    4
+#define LPFC_IO_HIPRI   8       /* High Priority Queue signal flag */
+
+        uint8_t abort_count;
+        uint8_t rsvd2;
+        uint32_t drvrTimeout;   /* driver timeout in seconds */
+        void *context1;         /* caller context information */
+        void *context2;         /* caller context information */
+        void *context3;         /* caller context information */
+        union {
+                wait_queue_head_t *hipri_wait_queue; /* High Priority Queue wait
+                                                        queue */
+                struct lpfc_iocbq  *rsp_iocb;
+                struct lpfcMboxq   *mbox;
+        } context_un;
+
+        void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *,
+                           struct lpfc_iocbq *);
+
+};
+
+#define SLI_IOCB_RET_IOCB      1        /* Return IOCB if cmd ring full */
+#define SLI_IOCB_HIGH_PRIORITY 2        /* High priority command */
+
+#define IOCB_SUCCESS        0
+#define IOCB_BUSY           1
+#define IOCB_ERROR          2
+#define IOCB_TIMEDOUT       3
+
+typedef struct lpfcMboxq {
+        /* MBOXQs are used in single linked lists */
+        struct list_head list;  /* ptr to next mailbox command */
+        MAILBOX_t mb;           /* Mailbox cmd */
+        void *context1;         /* caller context information */
+        void *context2;         /* caller context information */
+
+        void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *);
+
+} LPFC_MBOXQ_t;
+
+#define MBX_POLL        1       /* poll mailbox till command done, then
+                                   return */
+#define MBX_NOWAIT      2       /* issue command then return immediately */
+#define MBX_STOP_IOCB   4       /* Stop iocb processing till mbox cmds
+                                   complete */
+
+#define LPFC_MAX_RING_MASK  4   /* max num of rctl/type masks allowed per
+                                   ring */
+#define LPFC_MAX_RING       4   /* max num of SLI rings used by driver */
+
+struct lpfc_sli_ring;
+
+struct lpfc_sli_ring_mask {
+        uint8_t profile;        /* profile associated with ring */
+        uint8_t rctl;   /* rctl / type pair configured for ring */
+        uint8_t type;   /* rctl / type pair configured for ring */
+        uint8_t rsvd;
+        /* rcv'd unsol event */
+        void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *,
+                                         struct lpfc_sli_ring *,
+                                         struct lpfc_iocbq *);
+};
+
+
+/* Structure used to hold SLI statistical counters and info */
+struct lpfc_sli_ring_stat {
+        uint64_t iocb_event;     /* IOCB event counters */
+        uint64_t iocb_cmd;       /* IOCB cmd issued */
+        uint64_t iocb_rsp;       /* IOCB rsp received */
+        uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */
+        uint64_t iocb_cmd_full;  /* IOCB cmd ring full */
+        uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */
+        uint64_t iocb_rsp_full;  /* IOCB rsp ring full */
+};
+
+/* Structure used to hold SLI ring information */
+struct lpfc_sli_ring {
+        uint16_t flag;          /* ring flags */
+#define LPFC_DEFERRED_RING_EVENT 0x001  /* Deferred processing a ring event */
+#define LPFC_CALL_RING_AVAILABLE 0x002  /* indicates cmd was full */
+#define LPFC_STOP_IOCB_MBX       0x010  /* Stop processing IOCB cmds mbox */
+#define LPFC_STOP_IOCB_EVENT     0x020  /* Stop processing IOCB cmds event */
+#define LPFC_STOP_IOCB_MASK      0x030  /* Stop processing IOCB cmds mask */
+        uint16_t abtsiotag;     /* tracks next iotag to use for ABTS */
+
+        uint32_t local_getidx;   /* last available cmd index (from cmdGetInx) */
+        uint32_t next_cmdidx;    /* next_cmd index */
+        uint8_t rsvd;
+        uint8_t ringno;         /* ring number */
+        uint8_t rspidx;         /* current index in response ring */
+        uint8_t cmdidx;         /* current index in command ring */
+        uint16_t numCiocb;      /* number of command iocb's per ring */
+        uint16_t numRiocb;      /* number of rsp iocb's per ring */
+
+        uint32_t fast_iotag;    /* max fastlookup based iotag           */
+        uint32_t iotag_ctr;     /* keeps track of the next iotag to use */
+        uint32_t iotag_max;     /* max iotag value to use               */
+        struct lpfc_iocbq ** fast_lookup; /* array of IOCB ptrs indexed by
+                                           iotag */
+        struct list_head txq;
+        uint16_t txq_cnt;       /* current length of queue */
+        uint16_t txq_max;       /* max length */
+        struct list_head txcmplq;
+        uint16_t txcmplq_cnt;   /* current length of queue */
+        uint16_t txcmplq_max;   /* max length */
+        uint32_t *cmdringaddr;  /* virtual address for cmd rings */
+        uint32_t *rspringaddr;  /* virtual address for rsp rings */
+        uint32_t missbufcnt;    /* keep track of buffers to post */
+        struct list_head postbufq;
+        uint16_t postbufq_cnt;  /* current length of queue */
+        uint16_t postbufq_max;  /* max length */
+        struct list_head iocb_continueq;
+        uint16_t iocb_continueq_cnt;    /* current length of queue */
+        uint16_t iocb_continueq_max;    /* max length */
+
+        struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK];
+        uint32_t num_mask;      /* number of mask entries in prt array */
+
+        struct lpfc_sli_ring_stat stats;        /* SLI statistical info */
+
+        /* cmd ring available */
+        void (*lpfc_sli_cmd_available) (struct lpfc_hba *,
+                                        struct lpfc_sli_ring *);
+};
+
+/* Structure used to hold SLI statistical counters and info */
+struct lpfc_sli_stat {
+        uint64_t mbox_stat_err;  /* Mbox cmds completed status error */
+        uint64_t mbox_cmd;       /* Mailbox commands issued */
+        uint64_t sli_intr;       /* Count of Host Attention interrupts */
+        uint32_t err_attn_event; /* Error Attn event counters */
+        uint32_t link_event;     /* Link event counters */
+        uint32_t mbox_event;     /* Mailbox event counters */
+        uint32_t mbox_busy;      /* Mailbox cmd busy */
+};
+
+/* Structure used to hold SLI information */
+struct lpfc_sli {
+        uint32_t num_rings;
+        uint32_t sli_flag;
+
+        /* Additional sli_flags */
+#define LPFC_SLI_MBOX_ACTIVE      0x100 /* HBA mailbox is currently active */
+#define LPFC_SLI2_ACTIVE          0x200 /* SLI2 overlay in firmware is active */
+#define LPFC_PROCESS_LA           0x400 /* Able to process link attention */
+
+        struct lpfc_sli_ring ring[LPFC_MAX_RING];
+        int fcp_ring;           /* ring used for FCP initiator commands */
+        int next_ring;
+
+        int ip_ring;            /* ring used for IP network drv cmds */
+
+        struct lpfc_sli_stat slistat;   /* SLI statistical info */
+        struct list_head mboxq;
+        uint16_t mboxq_cnt;     /* current length of queue */
+        uint16_t mboxq_max;     /* max length */
+        LPFC_MBOXQ_t *mbox_active;      /* active mboxq information */
+
+        struct timer_list mbox_tmo;     /* Hold clk to timeout active mbox
+                                           cmd */
+
+        uint32_t *MBhostaddr;   /* virtual address for mbox cmds */
+};
+
+/* Given a pointer to the start of the ring, and the slot number of
+ * the desired iocb entry, calc a pointer to that entry.
+ * (assume iocb entry size is 32 bytes, or 8 words)
+ */
+#define IOCB_ENTRY(ring,slot) ((IOCB_t *)(((char *)(ring)) + ((slot) * 32)))
+
+#define LPFC_MBOX_TMO           30      /* Sec tmo for outstanding mbox
+                                           command */